DOWSIL(TM) 9040 Silicone Elastomer Blend

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DOWSIL(TM) 9040 Silicone Elastomer Blend is a mixture of crosslinked silicone elastomer in cyclopentasiloxane. It provides dry smoothness, quick absorption, and a light silky feel on the skin. DOWSIL(TM) 9040 Silicone Elastomer Blend can be used as a thickening agent in water-in-oil and water-in-silicone formulations, and it is compatible with a variety of lipophilic active ingredients such as fragrances, sunscreens, vitamins, and vitamin derivatives.

INCI Name: Dimethicone Crosspolymer

Functions: Thickener, Viscosity Modifier

Ingredient Origin: Non-Animal Origin, Synthetic

Benefit Claims: Aesthethic Enhancement, Broad pH Stability, Color Protection, Dry Feel, Ease of Formulation, Improved Texture, Improved Thickness, Light Feel, Long Lasting Fragrance Release, Non-Greasy Feel, Non-Tacky, Powdery Feel, Rapid Absorption, Sebum Absorption, Sensory Enhancement, Silky Feel, Smooth Feel

Labeling Claims: Allergen-free, BSE-free, Buy Now, CMR Substances-free, Colorants-free, Endocrine Disruptor-free, Foreign matter-free, Halal, Irradiation-free, Nanomaterials-free, Non-Carcinogenic, Non-GMO, Non-Mutagenic, Non-Toxic, Not Listed In California Proposition 65, Palm Oil-free, Porcine-free, Preservative-free, TSE-free, Vegan

Certifications & Compliance: Directive 2011/65/EC amended through EU/2015/863 (RoHS), EU Cosmetic Regulation 1223/2009 Compliant, Halal, REACH (Europe), SVHC Compliant

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Identification & Functionality

Cosmetic Ingredients Functions
Chemical Structure

DOWSIL(TM) 9040 Silicone Elastomer Blend - Chemical Structure

Fig: Cross-linked network of DOWSIL(TM) 9040 Silicone Elastomer Blend.

Features & Benefits

Product Highlights
  • Compatible with a variety of lipophilic active ingredients such as fragrances, sunscreens, vitamins, and vitamin derivatives
  • Clear to slightly translucent cross-linked silicone elastomer gel
  • Easy to formulate
  • Acts as a thickening agent for water-in-oil and water-in-silicone formulations and silicone fluids
  • Slight sebum absorption
  • Provides dry smoothness and a light silky skin feel non-greasy
  • Enhances the esthetics of volatile silicones
  • Reduces tackiness of formulations
  • Quick absorption
  • Cold processing
  • The stability of vitamin derivatives such as Vitamin A Palmitate is improved when pre- mixed with DOWSIL(TM) 9040 Silicone Elastomer Blend prior to incorporation into a finished formulation

Applications & Uses

AP/Deo Applications
Treatment Product Applications
Applications
  • Skincare
  • Hair care
  • Many other potential formulations
Application Information

Disperse the oil-phase into DOWSIL(TM) 9040 Silicone Elastomer Blend using simple mixing. There is no need for post-shearing. DOWSIL(TM) 9040 Silicone Elastomer Blend provides cyclopentasiloxane which has already been thickened and can provide a novel form of delivery for other formulation components. Thickening of formulations can be achieved using a cold process.

Formulation Tips

DOWSIL(TM) 9040 Silicone Elastomer Blend may be formulated into oil-in-water emulsions, water-in- silicone emulsions, water-in-oil emulsions and anhydrous products.

  • It may be added to the oil phase or silicone phase in an emulsion formulation.
  • It may be post-added to emulsions provided the emulsion is viscous enough for the DOWSIL(TM) 9040 Silicone Elastomer Blend to be dispersed.
  • For ease of use, its viscosity may be reduced by blending with dimethicone or cyclomethicone.
  • It may be formulated with organic oils and silicon-based materials with the use of mixers and may be subjected to high shear devices such as homogenizers and sonolators.
  • It is dispersible in a variety of liquid oils (refer to compatibility chart on page 4).
  • Because the elastomer is stable, DOWSIL(TM) 9040 Silicone Elastomer Blend may be subjected to heat for a short duration. When heat is used, the material should be processed in an enclosed vessel to prevent the cyclopentasiloxane from volatilizing; the vessel should be inerted at temperatures over 60°C (140°F).
Processing

DOWSIL(TM) 9040 Silicone Elastomer Blend is a viscous product but has the unique characteristic of being a shear-thinning material.

The following information will aid in the selection of the proper equipment to use when processing DOWSIL(TM) 9040 Silicone Elastomer Blend out of a drum.

Pump Recommendation

GRACO BULLDOG 10:1 Pump with follower plate.

Customer-specific Pump Design Considerations

  1. Pressure and flow requirements
    • Air supply pressure: Will depend on the plant's air supply capabilities.
    • Discharge pressure: Will depend on total pressure required to move the silicone elastomer blend from point A to point B. Pressure drops due to elevationand , frictional losses within the piping, fittings, valves, filters, etc., will need to be considered.
    • Flow requirements: Will depend on how quickly the user wishes to transfer the silicone elastomer blend from a 208 liter (55 gal) drum into a vessel.
  2. Material viscosity in cP at the application temperature DOWSIL(TM) 9040 Silicone Elastomer Blend is shear thinning. Effective viscosity is 80,000-100,000 cP. This is only an example; it is the responsibility of the user to determine the effective viscosity based on the users application. Once the material is pushed through the pump by the follower plate and processed in the pump, the product will shear thin and process as a lower-viscosity fluid.
  3. Construction material for wetted parts - Stainless steel is recommended but carbon steel may also be used.
  4. Construction materials for seals and gaskets. VITON or TEFLON materials are recommended. Please contact Dow for alternatives.
Clean-up

XIAMETER(TM) PMX-0245 Cyclopentasiloxane, which dilutes the viscosity of DOWSIL(TM) 9040 Silicone Elastomer Blend to water thin, is recommended for soaking or cleaning equipment. Other non-polar solvents may work as well.

Limitations

This product is neither tested nor represented as suitable for medical or pharmaceutical uses.

Properties

Physical Form
Appearance
Crystal clear to slightly translucent gel. May have slight yellow or brownish color. Free of particulate matter.
Typical Properties
ValueUnitsTest Method / Conditions
Viscosity250,000 - 580,000mm²/s
Specific Gravity0.96
Non-Volatile Content12.0 - 12.75%
Cyclotetrasiloxane (D4) Contentmax. 1%
Compatibility
Wt % DOWSIL(TM) 9040 Silicone Elastomer Blend: 10 50 90
Material      
Water Not Compatible Not Compatible Not Compatible
Triglycerides Not Compatible Not Compatible Not Available
Solvents      
Ethanol Not Compatible Not Compatible Compatible
Propylene glycol Not Compatible Not Compatible Compatible
Isopropyl alcohol Not Compatible Not Compatible Compatible
Acetone Not Compatible Not Compatible Compatible
Fatty Esters      
Isopropyl myristate Compatible Compatible Compatible
Octyl palmitate Compatible Compatible Compatible
Hydrocarbons      
Mineral oil Not Compatible Not Compatible Compatible
Isododecane Compatible Compatible Compatible
Silicones      
XIAMETER(TM) PMX-0244 Cyclopentasiloxane Compatible Compatible Compatible
XIAMETER(TM) PMX-0245 Cyclopentasiloxane Compatible Compatible Compatible
XIAMETER(TM) PMX-0344 Cyclopentasiloxane Blend Compatible Compatible Compatible
XIAMETER(TM) PMX-0345 Cyclopentasiloxane Blend Compatible Compatible Compatible
XIAMETER(TM) PMX-200 Silicone Fluid 5–30000 cSt Compatible Compatible Compatible
DOWSIL(TM) 556 Cosmetic Grade Fluid Compatible Compatible Compatible

Regulatory & Compliance

Technical Details & Test Data

Technical Data

DOWSIL(TM) 9040 Silicone Elastomer Blend - Technical Data

Figure 2: Thickening Effect. *Brookfield DVII spindle RV-07 at 5 rpm.

 

DOWSIL(TM) 9040 Silicone Elastomer Blend - Technical Data - 1

Figure 3: Absorption of Sebum. Results significant at 90% confidence level; control: untreated skin *Sebumeter SM 180

 

DOWSIL(TM) 9040 Silicone Elastomer Blend - Technical Data - 2

Figure 4: Volatility of Cyclopentasiloxane from Elastomer Blend

 

DOWSIL(TM) 9040 Silicone Elastomer Blend - Technical Data - 3

Figure 5: Stress Sweeps for Two Elastomer Blends

 

DOWSIL(TM) 9040 Silicone Elastomer Blend - Technical Data - 4

Figure 6: Stress Ramps (0–5,000 dynes/cm2) for DOWSILTM 9040 Silicone Elastomer Blend at Elastomer Levels 1. Diluted with XIAMETERTM PMX-0245 Cyclopentasiloxane

Packaging & Availability

Regional Availability
  • Africa
  • Asia Pacific
  • Europe
  • Latin America
  • North America
Packaging
  • This product is available in 15 kg and 180 kg.
  • Samples are available in 400 g.

Storage & Handling

Shelf Life
24 months
Storage Conditions

When stored at or below 60°C (140°F) in the original unopened containers, this product has a usable life of 24 months from the date of production.